Flow metering apparatus



FIG. 1 is a frontal view of a flow metering apparatus, the rear view being the same;

FIG. 2 is a right side view thereof, the left side view being the same;

FIG. 3 is a top view thereof; and,

FIG. 4 is a bottom view thereof. 

CLAIM We claim the ornamental design for a flow metering apparatus, substantially as shown and described. 